drivers/ata/libata-trace.c

   1 /*
   2  * libata-trace.c - trace functions for libata
   3  *
   4  * Copyright 2015 Hannes Reinecke
   5  * Copyright 2015 SUSE Linux GmbH
   6  *
   7  *  This program is free software; you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License as published by
   9  *  the Free Software Foundation; either version 2, or (at your option)
  10  *  any later version.
  11  *
  12  *  This program is distributed in the hope that it will be useful,
  13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *  GNU General Public License for more details.
  16  *
  17  *  You should have received a copy of the GNU General Public License
  18  *  along with this program; see the file COPYING.  If not, write to
  19  *  the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
  20  */
  21
  22 #include <linux/kernel.h>
  23 #include <linux/trace_seq.h>
  24 #include <trace/events/libata.h>
  25
  26 const char *
  27 libata_trace_parse_status(struct trace_seq *p, unsigned char status)
  28 {
  29         const char *ret = trace_seq_buffer_ptr(p);
  30
  31         trace_seq_printf(p, "{ ");
  32         if (status & ATA_BUSY)
  33                 trace_seq_printf(p, "BUSY ");
  34         if (status & ATA_DRDY)
  35                 trace_seq_printf(p, "DRDY ");
  36         if (status & ATA_DF)
  37                 trace_seq_printf(p, "DF ");
  38         if (status & ATA_DSC)
  39                 trace_seq_printf(p, "DSC ");
  40         if (status & ATA_DRQ)
  41                 trace_seq_printf(p, "DRQ ");
  42         if (status & ATA_CORR)
  43                 trace_seq_printf(p, "CORR ");
  44         if (status & ATA_SENSE)
  45                 trace_seq_printf(p, "SENSE ");
  46         if (status & ATA_ERR)
  47                 trace_seq_printf(p, "ERR ");
  48         trace_seq_putc(p, '}');
  49         trace_seq_putc(p, 0);
  50
  51         return ret;
  52 }
  53
  54 const char *
  55 libata_trace_parse_eh_action(struct trace_seq *p, unsigned int eh_action)
  56 {
  57         const char *ret = trace_seq_buffer_ptr(p);
  58
  59         trace_seq_printf(p, "%x", eh_action);
  60         if (eh_action) {
  61                 trace_seq_printf(p, "{ ");
  62                 if (eh_action & ATA_EH_REVALIDATE)
  63                         trace_seq_printf(p, "REVALIDATE ");
  64                 if (eh_action & (ATA_EH_SOFTRESET | ATA_EH_HARDRESET))
  65                         trace_seq_printf(p, "RESET ");
  66                 else if (eh_action & ATA_EH_SOFTRESET)
  67                         trace_seq_printf(p, "SOFTRESET ");
  68                 else if (eh_action & ATA_EH_HARDRESET)
  69                         trace_seq_printf(p, "HARDRESET ");
  70                 if (eh_action & ATA_EH_ENABLE_LINK)
  71                         trace_seq_printf(p, "ENABLE_LINK ");
  72                 if (eh_action & ATA_EH_PARK)
  73                         trace_seq_printf(p, "PARK ");
  74                 trace_seq_putc(p, '}');
  75         }
  76         trace_seq_putc(p, 0);
  77
  78         return ret;
  79 }
  80
  81 const char *
  82 libata_trace_parse_eh_err_mask(struct trace_seq *p, unsigned int eh_err_mask)
  83 {
  84         const char *ret = trace_seq_buffer_ptr(p);
  85
  86         trace_seq_printf(p, "%x", eh_err_mask);
  87         if (eh_err_mask) {
  88                 trace_seq_printf(p, "{ ");
  89                 if (eh_err_mask & AC_ERR_DEV)
  90                         trace_seq_printf(p, "DEV ");
  91                 if (eh_err_mask & AC_ERR_HSM)
  92                         trace_seq_printf(p, "HSM ");
  93                 if (eh_err_mask & AC_ERR_TIMEOUT)
  94                         trace_seq_printf(p, "TIMEOUT ");
  95                 if (eh_err_mask & AC_ERR_MEDIA)
  96                         trace_seq_printf(p, "MEDIA ");
  97                 if (eh_err_mask & AC_ERR_ATA_BUS)
  98                         trace_seq_printf(p, "ATA_BUS ");
  99                 if (eh_err_mask & AC_ERR_HOST_BUS)
 100                         trace_seq_printf(p, "HOST_BUS ");
 101                 if (eh_err_mask & AC_ERR_SYSTEM)
 102                         trace_seq_printf(p, "SYSTEM ");
 103                 if (eh_err_mask & AC_ERR_INVALID)
 104                         trace_seq_printf(p, "INVALID ");
 105                 if (eh_err_mask & AC_ERR_OTHER)
 106                         trace_seq_printf(p, "OTHER ");
 107                 if (eh_err_mask & AC_ERR_NODEV_HINT)
 108                         trace_seq_printf(p, "NODEV_HINT ");
 109                 if (eh_err_mask & AC_ERR_NCQ)
 110                         trace_seq_printf(p, "NCQ ");
 111                 trace_seq_putc(p, '}');
 112         }
 113         trace_seq_putc(p, 0);
 114
 115         return ret;
 116 }
 117
 118 const char *
 119 libata_trace_parse_qc_flags(struct trace_seq *p, unsigned int qc_flags)
 120 {
 121         const char *ret = trace_seq_buffer_ptr(p);
 122
 123         trace_seq_printf(p, "%x", qc_flags);
 124         if (qc_flags) {
 125                 trace_seq_printf(p, "{ ");
 126                 if (qc_flags & ATA_QCFLAG_ACTIVE)
 127                         trace_seq_printf(p, "ACTIVE ");
 128                 if (qc_flags & ATA_QCFLAG_DMAMAP)
 129                         trace_seq_printf(p, "DMAMAP ");
 130                 if (qc_flags & ATA_QCFLAG_IO)
 131                         trace_seq_printf(p, "IO ");
 132                 if (qc_flags & ATA_QCFLAG_RESULT_TF)
 133                         trace_seq_printf(p, "RESULT_TF ");
 134                 if (qc_flags & ATA_QCFLAG_CLEAR_EXCL)
 135                         trace_seq_printf(p, "CLEAR_EXCL ");
 136                 if (qc_flags & ATA_QCFLAG_QUIET)
 137                         trace_seq_printf(p, "QUIET ");
 138                 if (qc_flags & ATA_QCFLAG_RETRY)
 139                         trace_seq_printf(p, "RETRY ");
 140                 if (qc_flags & ATA_QCFLAG_FAILED)
 141                         trace_seq_printf(p, "FAILED ");
 142                 if (qc_flags & ATA_QCFLAG_SENSE_VALID)
 143                         trace_seq_printf(p, "SENSE_VALID ");
 144                 if (qc_flags & ATA_QCFLAG_EH_SCHEDULED)
 145                         trace_seq_printf(p, "EH_SCHEDULED ");
 146                 trace_seq_putc(p, '}');
 147         }
 148         trace_seq_putc(p, 0);
 149
 150         return ret;
 151 }